Quotes

Clearly, Richard Lang has produced the strongest microcomputer program in the world. It searches 4-5 plies brute force plus up to 6-7 plies selective search. The program contains a lot of chess knowledge, which is used both in the tree and to create piece-value-tables. The chess knowledge was obtained from chess masters, who analyzed games played by the program. The program has an asymmetric evaluation function, which emphasis safety (has rules like 'do not start a wild attack, but worry a lot if the opponent does so'). The program searches about 4000 nodes per second on a 28 MHz 68020, but this includes a thorough analysis at every node, including a swap-off evaluation (static analysis of captures instead of a capture search).

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In 2002 Richard Lang founded his own company, merchandising Chess Genius for various platforms with focus on PDA and mobile phones, recently also for Android[13] . In an 2003 interview, Richard Lang stated that there is still much of Cyrus in current versions of Chess Genius. For example, he had never used quiescence searches and relied instead on a static swap off routine. More recently he has failed to make progress with top PC programs. In part perhaps due to his programming techniques do not scale well on very fast hardware. The program has become very complex, and unfortunately the complexity seems necessary and new ideas have not really worked [14] .